12690800

素因数分解:

$2^4\times 5^2\times {\mathrm{31727}}^1$

素因数の和:31745

約数の個数: 30

約数和(自身を含む): 30490608

約数和(自身を除く): 17799808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 31727, 63454, 126908, 158635, 253816, 317270, 507632, 634540, 793175, 1269080, 1586350, 2538160, 3172700, 6345400, 12690800]

約数ペア:

[(1, 12690800), (2, 6345400), (4, 3172700), (5, 2538160), (8, 1586350), (10, 1269080), (16, 793175), (20, 634540), (25, 507632), (40, 317270), (50, 253816), (80, 158635), (100, 126908), (200, 63454), (400, 31727)]